public class Example2_4 {
	public static void main (String args[]) {
		int a[]={1,2,3,4};
		int b[]={100,200,300};
		System.out.println("数组a的元素个数"+a.length);
		System.out.println("数组b的元素个数"+b.length);
		System.out.println("数组a的引用"+a);
		System.out.println("数组b的引用"+b);
		a=b;
		System.out.println("数组a的元素个数"+a.length);
		System.out.println("数组b的元素个数"+b.length);
		System.out.println("a[0]="+a[0]+"，a[1]="+a[1]+"，a[2]="+a[2]);
		System.out.print("b[0]="+b[0]+"，b[1]="+b[1]+"b[2]="+b[2]);
}
}
